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Finding the Fourth Proportional to 372,272.70, 558,409.05 and 147,686.70

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Solution

The fourth proportional to 372,272.70, 558,409.05 and 147,686.70 is: 221,530.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,272.70 : 558,409.05 = 147,686.70 : x
  2. Step 2: Convert to fraction form
    372,272.70/558,409.05 = 147,686.70/x
  3. Step 3: Cross multiply
    372,272.70x = 558,409.05 × 147,686.70
  4. Step 4: Simplify right side
    372,272.70x = 82,469,589,844.64
  5. Step 5: Solve for x
    x = 82,469,589,844.64/372,272.70
  6. Step 6: Final answer
    x = 221,530.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.